1833: a quirky year with an extraordinary May

[Weather-history]

Today we are looking back at 1833

1833 was a quirky year that had one of the most extraordinary months ever record: May 1833. Months compared to 1801-30 average.

Jan: 1.2 (-1.2)

Feb: 5.6 (+1.6)

Mar: 3.9 (-1.6)

Apr: 7.7 (-0.2)

May:15.1 (+3.7)

Jun: 14.6 (+0.4)

Jul: 15.8 (0.0)

Aug: 14.3 (-1.1)

Sep: 12.1 (-1.1)

Oct: 10.1 (+0.3)

Nov: 6.6 (+0.7)

Dec: 6.9 (+3.3)

The quirks

February warmer than March

May warmer than June, one of only 2 occasions that has ever happened

November colder than December

January: 10th driest ever recorded

February: wettest ever recorded

A notably dry May followed by a pretty wet June

The highlight of the year was that extraordinary May, 15.1, the next warmest May ever is 13.9 set in 1848, 1.2C below the CET recorded for May 1833.

The first half of May 1833 was 14.93C

The second half of May 1833 was 15.26C

The period 10th -20th May had a CET average of 16.47

The 15th of May was an exceptionally warm day for the time of year, a CET daily mean of 20.0C was recorded.

May 1833 and October 1740 are two of the most remarkable months ever recorded in the CET listings.

The following year was notable for the lack of any real cold.

1834 was a very warm year and was until 1949, the joint warmest year on record with 1733 and then joined by 1921 with an annual CET of 10.47

Jan: 7.1 (+4.7)

Feb: 5.6 (+1.6)

Mar: 7.1 (+1.6)

Apr: 7.7 (-0.2)

May: 13.0 (+1.6)

Jun: 15.4 (+1.2)

Jul: 16.9 (+1.1)

Aug: 16.2 (+0. :lol:

Sep: 13.8 (+0.6)

Oct: 10.6 (+0.

Nov: 6.7 (+0.

Dec: 5.6 (+2.0)

Winter 1833-34, 2nd warmest on record. Just edges winter 1988-89 if you go to the 2nd decimal point

4th warmest January on record, the summer is not outstanding though in terms of warmth.

January was very wet, 6th wettest on record.

July was exceptionally wet, the 2nd wettest July on record with an average of 164.2mm. (wetter than any month since December 2002)

The seasons oscillated between the wet and the dry, winter 1833-34 was wet, spring was dry, summer was wet and the autumn was pretty dry.

[frozen_north]

I bet they were all blaming GW back in 1834 after that January. A CET of 7.1C. Thats hot.

[Terminal Moraine]

Equally quirky is the difference in the 30 year mean temperature of January and February at the time; Jan' has a mean of 2.4c and Feb', 4.0c.

A look at the CET series shows that there were no fewer than 12 years out of the 30 when February was 2.0c, or greater, warmer than January.

The greatest difference between the two months during this 30 year period was 6.2c in 1815. Jan' had a mean of 0.3c and Feb', 6.5c.

T.M